SERVICEABILITY PERFORMANCE OF COMPOSITE METAL DECK WITH SLAB FROM RECYCLED CONCRETE COMPOSITION

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Witsaruta Rerksamosorn
Watanee Rerksamosorn
Somruthai Kongrakam
Pakjira Aosai
Norrasing Inmontien
Affan Kasor
Thanongsak Imjai

Abstract

This paper studies the serviceability performance of composite metal deck (2200x1000 mm) with slab from the recycled concrete aggregate. The composite metal decks with concrete made from recycled concrete aggregate (0-100% replacements) are metal deck slab-RCA0%, Metal deck slab-RCA25%, Metal deck slab-RCA50%, Metal deck slab-RCA75%, Metal deck slab-RCA100%. The specimens were tested in three testing series. In series 1, material proprieties of metal deck, FRP rods, as well as mechanical properties of RCA are investigated. In series 2, 15 test specimens were tested in short, 90 days long-term loadings and subjected to vibration due to human induction. In series 3, non-linear finite element analysis was used to study the ultimate capacity of test specimens with 100% reparent aggregate. Based on the result, it is found that the vibration levels recorded in the case of human walking lies within the acceptance level (<0.15g), except in the case of human jumping, which exceeds the very annoying level. Numerical results show that the failure mode for the tested slab with 100% RCA occurred due to metal deck yielding.

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